<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
    <meta name="viewport" content="width=device-width">
    <title>myplugin2</title>
</head>
<body>
	
</body>
<script src='./index.js'></script>
<script>
    with(plugin){
        console.log(add(1,2)) // 3
        console.log(sub(3,4)) // -1
        console.log(mul()) // 0
        console.log(ecp()) // 0
        console.log(sur()) // 0
    }


</script>
</html>